noun
or reichert-meissl value ˈrīkə(r)t, ˈmīsəl-
Usage: usually capitalized R&M
Etymology: after Karl Reichert and E. Meissl, 19th century German chemists
: a Reichert value expressed as the milliliters of tenth-normal alkali required to neutralize the acids obtained from five grams of fat by a specified method of saponification and distillation